<div class="well">
<ul class="nav nav-list">
    <li class="nav-header">Entity title</li>
    <li class="{$entity_item1_class|default:''}"><a href="controller/action/">Item 1</a></li>
    <li class="{$entity_item2_class|default:''}"><a href="controller/action/">Item 2</a></li>
    <li class="{$entity_item3_class|default:''}"><a href="controller/action/">Item 3</a></li>
</ul>
</div>